OS/2

The other day I spent a while trying to understand the purpose of a rather strange looking piece of code inside Borland’s THELP.COM utility shipped with Turbo Pascal 6.0 (THELP.COM was misbehaving under emulated DOS). The THELP utility performs the … Continue reading →

Date: Jan 2 of 2025. On his blog post, Neozeed is using LLM's to make C code compatible with older OS/2 compilers. URL: https://virtuallyfun.com/2025/01/02/happy-2025/  

Date: 2025-01-14 By Alex Cox / Tech Radar. "Techradar holds out an entirely subjective list of "best alternative operating systems" that they update every year. ArcaOS is still listed as #1 after this years update" URL: https://www.techradar.com/news/best-alternative-operating-systems Source: OS/2, eComStation & ArcaOS Facebook Group  

Date: 2025-01-18 By Lian Proven / The Register "Earlier this month, we took a look at how Microsoft learned important lessons from the failure of OS/2, even though less than a decade later, it had already started forgetting what went wrong and why...." URL: https://www.theregister.com/2025/01/18/how_windows_got_to_v3/ Source: OS/2, eComStation & ArcaOS Facebook Group

So here I am, writing a bit of test code to figure out the behavior of x87 FPUs with regard to saving and loading the FPU state (FSTENV/FLDENV and FSAVE/FRSTOR instructions in different modes and formats). The original real-mode only … Continue reading →

Date: 2025-01-05 By Lian Proven / The Register "A 1995 Usenet post from Gordon Letwin, Microsoft's lead architect on the OS/2 project, has been rediscovered. To modern eyes, it looks like an email, but it wasn't...." URL: https://www.theregister.com/2025/01/05/microsoft_os2_flop_future/ Source: OS/2, eComStation & ArcaOS Facebook Group

Date: 2024-12-31 By: Velian Speaks Tech Time: 25 minutes Visit: https://www.youtube.com/watch?v=GDfOLzIqrDo  

Date: 2024-12-25 By: LynxMic Time: 24 minutes URL: https://www.youtube.com/watch?v=X6mzTY9Zryw "I tried third-party apps (& even games) for OS/2 Warp 4. The result is... this. I'm surprised how this video is somehow almost 25 minutes long, but it is what it is, please enjoy the last major Lynxmic video of 2024! An OS/2 Warp 4 Video (the original 2020 video):    • An OS/2 Warp 4 Video   Merry Christmas!"

Date: 2024-12-17 This is an interesting view of alternative parallel lives :)

• German: https://www.michael-bickel.de/2024/12/was-waere-wenn-sich-ibm-os-2-statt-microsoft-windows-durchgesetzt-haette/
• Translation to English: https://www-michael--bickel-de.translate.goog/2024/12/was-waere-wenn-sich-ibm-os-2-statt-microsoft-windows-durchgesetzt-haette/?_x_tr_sl=auto&amp%3B_x_tr_tl=en&amp%3B_x_tr_hl=en-US&amp%3B_x_tr_pto=wapp Source: OS/2, eComStation & ArcaOS Facebook Group

A previous blog post explored the semi-mysterious yet sometimes highly useful DOS APPEND command. Now it’s time to look at its relatives: ASSIGN, JOIN, and SUBST. ASSIGN ASSIGN is the oldest of the bunch. It was written by IBM and … Continue reading →

So I was working on improving a DOS emulator, when I found that something seemingly trivial wasn’t working right when COMMAND.COM was asked to do the following: echo AB> foo.txtecho CD>> foo.txt Instead of ABCD, foo.txt contained ABBC. I verified … Continue reading →

Posted at 2024-12-17 by movq "In the previous blog post, I took a quick look at OS/2's virtualization features. How do the basics work or, rather, does it work at all? This time, I'm poking around a bit to see which drives we can see and use..." Visit: https://www.uninformativ.de/blog/postings/2024-12-17/0/POSTING-en.html  

Posted at 2014-12-13 by movq. "A while ago, someone on the fediverse mentioned "OS/2's virtualization features" to me. I don't remember who it was, sorry. I had the chance to take a look at this today...." Visit: https://www.uninformativ.de/blog/postings/2024-12-13/0/POSTING-en.html  

For a long time, I couldn’t quite grasp what the DOS APPEND command could possibly be good for. Until I came across a situation which APPEND was made for. When I worked on organizing and building the DOS 2.11 source … Continue reading →

A while ago I was involved in debugging a seemingly simple yet mysterious problem: A piece of code (a fairly simple interface DLL) built with the Open Watcom compiler was failing with a bogus stack overflow error. The mystery was … Continue reading →

Recently I spent some time trying to understand a piece of networking code, and it turned out to be far more difficult than it should have been. The code in question is the NetBIOS interface of C-Kermit and was originally … Continue reading →